Alcatel Lucent

Various embodiments provide a method and apparatus for determining tag location by using one or more estimated channel responses (CR) that characterize the wireless channel between the tag and one or more respective anchors. In particular, a tracking server in communication with the anchor(s) determines the tag's location based on a comparison of the estimated CR(s) with a set of stored CRs associated with the anchor(s).

An object of the invention is providing methods, apparatuses and a system for determining connection state assistive parameters. Compared with the prior art, according to the present invention, the core network element obtains the connection release time information and radio access network assistance information corresponding to the user equipment sent by the e NB, and when the user equipment transmits a request for network access service to the core network element, the core network element determines core network assistance information corresponding to the request for network access service based on the aforementioned information, and then transmits the core network assistance information to the e NB to act as connection state assistive parameters corresponding to the user equipment. Thereby, the present invention may enable the e NB to adjust/optimize the connection state assistive parameters corresponding to the e NB and the user equipment through providing ore network assistance information to the e NB by the core network element, reduce the transitions frequency between the idle state and the connection state, minimize transmission of network signaling, and reduce user equipment power consumption.

The embodiments of the invention relate to a transmitter apparatus (TA 1 ) for conditioning a multicarrier signal (RFS). The transmitter apparatus (TA 1 ) contains means (FE-PU) for grouping subcarriers of the multicarrier signal (RFS) into a first frequency block, which contains a first group of the subcarriers and into at least a second frequency block, which contains at least a second group of said subcarriers. The transmitter apparatus (TA 1 ) further contains first filtering means (LPF- 1 ) for sideband suppression outside of the first frequency block and at least second filtering means (LPF- 2 , LPF-M) for simultaneous and separate sideband suppression outside of the at least second frequency block. The embodiments of the invention further relate to a method for conditioning a multicarrier signal (RFS). The method contains grouping subcarriers of the multicarrier signal (RFS) into a first frequency block, which contains a first group of said subcarriers and into at least a second frequency block, which contains at least a second group of said subcarriers. The method further contains filtering the first frequency block for sideband suppression outside the first frequency block, and filtering the at least second frequency block for simultaneous and separate sideband suppression outside the at least second frequency block. The embodiments of the invention even further relate to a computer program having a program code for performing the method, when the computer program is executed on a computer or processor and to a network node, which contains the transmitter apparatus.

A wireless telecommunication network base station method, corresponding wireless telecommunication network user equipment method, computer program products and network nodes operable to perform those methods. The base station method comprises: encoding resource allocation information relating to a location of a system information block in a master information block. The user equipment method comprises: decoding resource allocation information relating to a location of a system information block in a master information block. Aspects and embodiments described may provide an efficient method which can be used to indicate an appropriate resource allocation for the SIB for MTC UE requiring coverage extension.

A method, in a radio communication system, for switching a primary node of a user equipment (UE) in dual connectivity with the primary node and a secondary node, switching the primary node such that the secondary node becomes the primary node for the UE; wherein the primary node is switched without modifying any traffic bearers, thereby causing no data interruptions during the switch.

A method, in a radio communication system, for synchronising radio configuration parameters between user equipment in dual connectivity using a first set of parameters with a primary node and a secondary node of the system, comprising: transmitting a set of radio configuration parameters from the secondary node to the UE; transmitting a synchronisation request from the user equipment to the secondary node for the set of updated parameters; and applying the set of updated parameters, if any.

A method for centralized address resolution includes maintaining a local address resolution database associated to a processing resource controller, maintaining a local address resolution database associated to a networking resource software-defined network controller, maintaining a centralized address resolution database for storing all the MAC address-IP address associations within the data center; when a resource requests the resolution of an IP address, sending a unicast read message from this resource to its controller which checks whether the associated local database stores a MAC address associated to this IP address, and if a MAC address, associated to this IP address MAC address, is stored in this local database, then supplying the MAC address to the resource that requested the resolution; if no MAC address, associated to this IP address MAC address, is stored in this local database, then forwarding the unicast read message to the centralized address resolution database.

A flow deflection capability is provided for deflecting data flows within a Software Defined Network (SDN) in order to provide security for the SDN. A flow forwarding rule is generated for a first network element of the SDN based on detection of a condition (e.g., TCAM utilization condition, CPU utilization condition, or the like) associated with the first network element. The flow forwarding rule is generated by a control element of the SDN or the first network element of the SDN. The flow forwarding rule is indicative that at least a portion of new flow requests received at the first network element are to be forwarded from the first network element to a second network element of the SDN. The flow forwarding rule may specify full flow deflection or selective flow deflection.

Embodiments relate to a transmitter ( 71 ) for transmitting a signal comprising data symbols and non-deterministic pilot symbols. The transmitter includes a mapper ( 712 ) operable to map one or more non-deterministic bits (u) to a non-deterministic pilot symbol having a pilot symbol phase in a predetermined pilot symbol phase range; and a pilot symbol inserter ( 115 ) operable to insert the pilot symbol into a stream of data symbols. Further, embodiments also relate to a corresponding receiver ( 73 ) for receiving a stream of data and pilot symbols. The receiver includes a phase estimator ( 737 ) operable to estimate a phase of a transmission channel based on a comparison of a received symbol corresponding to a pilot symbol position with a hypothetical pilot symbol, the hypothetical pilot symbol corresponding to one or more hypothetical non-deterministic bits (u) and having a pilot symbol phase in a predetermined pilot symbol phase range.

Proposed is an OLT for a passive optical wavelength division multiplex network. The network contains optical transmitters for generating downstream signals of an L-Band, as well as optical receivers for receiving upstream signals of a C-Band. Furthermore, the OLT contains a bi-directional SOA and an optical interface. The optical interface, the SOA, the transmitters and the receivers are optically coupled such that an upstream signal received at the optical interface is firstly provided to the bi-directional SOA and subsequently from the SOA to one of the receivers, and such that a downstream signal generated by one of the transmitters is firstly provided to the bi-directional SOA and then subsequently to the optical interface. The bi-directional SOA has a gain function that is not constant with respect to a wavelength of an optical signal to be amplified. Furthermore, the gain function is maximal for a wavelength located within the C-band.